【摘要】 针对油气井出砂严重,防砂管柱不能下到预定位置,普通防砂措施无法进行这一情况,总结形成了一套成熟的井壁坍塌井特殊防砂工艺理论和技术。以任斜493井防砂为例,阐述该工艺原理、防砂总成及各部件的作用,认为采取冲砂与防砂联合作业,可以对井壁坍塌井段进行特殊防砂处理。更多还原

【Abstract】 To the situations of serious sand production in oil and gas well,sand control string not being lowered to aimed depth and conventional sand control measure not being conducted,a set of special maternal sand control theory and technology in wells of their walls to collapse has been concluded. Taking example of ren-439 inclined well, the paper illustrates its principle and the function of every part. It is thought that utilizing combing operation of sand washing and sand control can do a special sand control process to the well intervals with collapsed walls.更多还原